Rod Buffer Seal

Zhejiang Jiacheng New Material Co., Ltd. is one of the leading manufacturers and suppliers of rod buffer seal in China, also supports customized service. Welcome to wholesale bulk high quality rod buffer seal in stock here from our factory. If you have any enquiry about quotation and free sample, please feel free to email us.

Size: Standard, or non standard

Color: White, Black, copper, etc.

What is the purpose of the piston rod buffer seal in a hydraulic cylinder?

The piston rod buffer seal is mainly used to protect the main seal of the piston rod from the impact of pressure. It is very important for the buffer seal to provide appropriate lubrication to the main seal. At the same time, it can avoid excessive pressure being trapped between the buffer seal and the piston rod seal.

Relationship between piston rod seal and buffer seal

The piston rod seal and buffer seal can maintain sealing contact between the hydraulic cylinder head and the reciprocating piston rod. Depending on the specific application, the piston rod sealing system can include piston rod seals and buffer seals or only piston rod seals. The piston rod sealing system used for heavy-duty equipment generally consists of a combination of two types of seals, with a buffer seal located between the piston rod seal and the piston in the cylinder head. The sealing of the piston rod determines the tolerance of the piston rod diameter d.

In addition to the sealing function, the piston rod seal can also provide a thin lubricating oil film on the piston rod to achieve self-lubrication and lubricate the dust seal. Lubricants can also prevent corrosion on the surface of the piston rod. However, the lubricating oil film must be thin enough to be sealed back into the hydraulic cylinder during the return journey.

The selection of piston rod sealing system and material selection is a complex task that requires consideration of the overall design and application conditions of hydraulic cylinders. SJK provides a variety of piston rod seals and buffer seals with different cross-sections, materials, series, and sizes, suitable for various working conditions and applications.

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